1. 1. Andrew T. Grey: Ultrasound guidance for regional anaesthesia, Miller's Anaesthesia, Ronald D. Miller, 7th edition 2010; Churchill Livingstone Elsevier; 1675-1686
2. 2. J. Alfred Lee, R.S. Atkinson, G. B. Rushman. A synopsis of anaesthesia, 10th edition 1987; 618.
3. First rib palpation: A safer, easier technique for supraclavicular brachial plexus block;Korbon;Anesth Analg,1989
4. 4. Brown DL, Cahill DR, Bridenbaugh LD> Supraclavicular nerve block: Anatomic analysis of a method to prevent pneumothorax. Anesth Analg 1993; 76: 5304.
5. 5. Moore DC. Regional block; A hand book for use in the clinical practice of medicine and surgery; 4th ed spring field 11, Charles C Thomas 1975; 221.